Other
Instagram - Visualize all things Every Second - Everysecond.io.
29 Lessons From Owning A #Bookstore - Ryanholiday.net.
Pedagonet.com - #Brain teasers in many categories for teachers, parents and students.
Heywhatsthat.com - Compute summits visible from any location #worldwide.
Youtube.com - #faithless - Tarantula (Official Video).